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At ok big Register — Get started in just 2 minutes

Join Bangladesh's most popular online betting platform. Welcome bonus, Mobile Pay payments, and Bangla support — all in one place.

Welcome Bonus
Mobile Pay support
Bangla support
SSL Secured
Instant Access
Registration steps
1
Fill in the form

Fill in the form with your name, mobile number, and password.

2
Verify OTP

Verify your number using the 6-digit code sent to your mobile.

3
Make Your First Deposit

Deposit from ৳200 via Mobile Pay, Nagad, or Rocket.

4
Claim Your Bonus & Start Playing

Claim your welcome bonus and start playing today.

Supported payment methods

Mobile Pay Nagad Rocket Bank Card

Create a new account

Register on ok big for Free — Takes Just 2 Minutes

Enter your name exactly as it appears on your NID

+880

Enter your active number for OTP verification

Enter your password

Already have an account?
SSL Secured
256-bit encryption
Instant
Register in 2 Minutes
Welcome Bonus
On your first deposit
Mobile Pay / Nagad
Easy Payments
24/7 support
Support in Bengali
Millions of members
Trusted Platform

What you get after registering

What's waiting for you as a new member of ok big

Generous Welcome Bonus

You'll receive a special welcome bonus on your first deposit with ok big. Check the Promotions Page for full bonus terms and conditions.

Cricket & Sports Betting

IPL, BPL, World Cup — bet live on all the major tournaments. Odds update in real time.

Live Casino & Slots

Hundreds of games from world-class providers including Evolution and Pragmatic Play. Experience the thrill of real gameplay with live dealers.

Fast Payment System

Deposit from as little as ৳200 via Mobile Pay, Nagad, or Rocket. Withdrawals processed within 15 minutes of winning.

Mobile app features

The ok big app is available on Android and iOS. Play from anywhere with a fast, smooth interface.

VIP Program

Play regularly, earn points, and enjoy VIP benefits — including higher cashback, faster withdrawals, and much more.

Why register with ok big?

Online gaming in Bangladesh is no longer just for city dwellers. Since mobile internet became affordable, millions of people across the country have flocked to platforms like ok big — and for one simple reason: ok big is genuinely built with Bangladeshis in mind.

Signing up on ok big is more than just opening an account. It means becoming part of a trusted community — where your winnings are paid on time, your information stays secure, and help is always available in Bengali whenever you need it.

What you need to register

Signing up on ok big is incredibly simple. All you need is:

  • An active Bangladeshi mobile number — For OTP verification.
  • Your full name — as it appears on your National ID Card.
  • A strong password — at least 8 characters, including numbers and special characters.
  • Must be at least 18 years old — ok big strictly adheres to this policy.

Registration at ok big is completely free. No deposit is required to sign up, but you'll need to make a deposit to start playing.

What to do first after registering

Once your account is created, you can browse all games on ok big. To start playing, you'll need to make a deposit first. Deposits start from as low as ৳200 via Mobile Pay or Nagad.

After your first deposit, ok big's welcome bonus will be automatically credited to your balance. To learn more about the bonus terms and conditions, Promotions Page View.

Ok big is strictly for users aged 18 and above. Providing false information during registration may result in account suspension. Please play responsibly.

How to Use a Referral Code

If a friend or someone you know on ok big has given you a referral code, enter it during registration. Using a referral code may unlock bonus rewards for both you and the person who referred you.

Tips for a secure account
Use a mix of uppercase letters, lowercase letters, and numbers in your password.
Do not use your date of birth or phone number as your password.
Keep two-step verification (2FA) turned on.
ok big will never ask for your password via SMS or phone call.
Log out from every device after use.
Having trouble registering?

Not receiving the OTP, having trouble submitting the form, or facing any other issue? The ok big support team is here to help.

Live Chat
Average response time: 3 minutes
support@okbig.net
Response within 1–2 hours

Frequently Asked Questions

Account Management FAQs

After registering, some account details on ok big can be updated, though not everything can be changed on your own. Once logged in, go to the "Profile" or "Settings" section to update your email address and communication preferences. Changing your mobile number requires OTP verification on both your old number and the new one. Name changes are more restricted — once your name has been verified through the KYC process, it generally cannot be altered. However, if there is a minor error in your name, you can submit a request to support@okbig.net along with a copy of your National ID Card, and the ok big team will review and correct it. When updating your profile, always make sure the information is accurate and belongs to you.

Yes, keeping two-factor authentication (2FA) enabled is absolutely essential — especially for accounts involving financial transactions. When 2FA is active on ok big, you'll need to enter an OTP sent to your mobile in addition to your password at login. This means that even if someone gets hold of your password, they won't be able to access your account without your phone. How to set it up: Log in to your account → Go to "Security" settings → Enable the "Two-Step Verification" or "2FA" option → Confirm using the code sent to your mobile. Once activated, you'll receive an OTP every time you log in. ok big strongly recommends that all users keep 2FA enabled — it's your first line of defence for protecting your funds.

Register Now — Claim Your Bonus

Joining ok big takes just 2 minutes. Registration is free, and your welcome bonus is available from your very first deposit.

Free Registration Download the app

18+ | SSL Secured | Play Responsibly

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